Dynamic/Get-AtwsContract.ps1

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
#Requires -Version 4.0
#Version 1.6.8
<#
    .COPYRIGHT
    Copyright (c) ECIT Solutions AS. All rights reserved. Licensed under the MIT license.
    See https://github.com/ecitsolutions/Autotask/blob/master/LICENSE.md for license information.
#>

Function Get-AtwsContract
{


<#
.SYNOPSIS
This function get one or more Contract through the Autotask Web Services API.
.DESCRIPTION
This function creates a query based on any parameters you give and returns any resulting objects from the Autotask Web Services Api. By default the function returns any objects with properties that are Equal (-eq) to the value of the parameter. To give you more flexibility you can modify the operator by using -NotEquals [ParameterName[]], -LessThan [ParameterName[]] and so on.
 
Possible operators for all parameters are:
 -NotEquals
 -GreaterThan
 -GreaterThanOrEqual
 -LessThan
 -LessThanOrEquals
 
Additional operators for [string] parameters are:
 -Like (supports * or % as wildcards)
 -NotLike
 -BeginsWith
 -EndsWith
 -Contains
 
Properties with picklists are:
 
BillingPreference
  
 
ContractCategory
  
 
ContractPeriodType
  
 
ContractType
  
 
Status
  
 
ServiceLevelAgreementID
  
 
TimeReportingRequiresStartAndStopTimes
  
 
Entities that have fields that refer to the base entity of this CmdLet:
 
AccountToDo
 BillingItem
 Contract
 ContractBillingRule
 ContractBlock
 ContractCost
 ContractExclusionAllocationCode
 ContractExclusionRole
 ContractFactor
 ContractMilestone
 ContractNote
 ContractRate
 ContractRetainer
 ContractRoleCost
 ContractService
 ContractServiceAdjustment
 ContractServiceBundle
 ContractServiceBundleAdjustment
 ContractServiceBundleUnit
 ContractServiceUnit
 ContractTicketPurchase
 InstalledProduct
 Project
 PurchaseOrderItem
 Ticket
 TimeEntry
 
.INPUTS
Nothing. This function only takes parameters.
.OUTPUTS
[Autotask.Contract[]]. This function outputs the Autotask.Contract that was returned by the API.
.EXAMPLE
Get-AtwsContract -Id 0
Returns the object with Id 0, if any.
 .EXAMPLE
Get-AtwsContract -ContractName SomeName
Returns the object with ContractName 'SomeName', if any.
 .EXAMPLE
Get-AtwsContract -ContractName 'Some Name'
Returns the object with ContractName 'Some Name', if any.
 .EXAMPLE
Get-AtwsContract -ContractName 'Some Name' -NotEquals ContractName
Returns any objects with a ContractName that is NOT equal to 'Some Name', if any.
 .EXAMPLE
Get-AtwsContract -ContractName SomeName* -Like ContractName
Returns any object with a ContractName that matches the simple pattern 'SomeName*'. Supported wildcards are * and %.
 .EXAMPLE
Get-AtwsContract -ContractName SomeName* -NotLike ContractName
Returns any object with a ContractName that DOES NOT match the simple pattern 'SomeName*'. Supported wildcards are * and %.
 .EXAMPLE
Get-AtwsContract -BillingPreference <PickList Label>
Returns any Contracts with property BillingPreference equal to the <PickList Label>. '-PickList' is any parameter on .
 .EXAMPLE
Get-AtwsContract -BillingPreference <PickList Label> -NotEquals BillingPreference
Returns any Contracts with property BillingPreference NOT equal to the <PickList Label>.
 .EXAMPLE
Get-AtwsContract -BillingPreference <PickList Label1>, <PickList Label2>
Returns any Contracts with property BillingPreference equal to EITHER <PickList Label1> OR <PickList Label2>.
 .EXAMPLE
Get-AtwsContract -BillingPreference <PickList Label1>, <PickList Label2> -NotEquals BillingPreference
Returns any Contracts with property BillingPreference NOT equal to NEITHER <PickList Label1> NOR <PickList Label2>.
 .EXAMPLE
Get-AtwsContract -Id 1234 -ContractName SomeName* -BillingPreference <PickList Label1>, <PickList Label2> -Like ContractName -NotEquals BillingPreference -GreaterThan Id
An example of a more complex query. This command returns any Contracts with Id GREATER THAN 1234, a ContractName that matches the simple pattern SomeName* AND that has a BillingPreference that is NOT equal to NEITHER <PickList Label1> NOR <PickList Label2>.
 
.LINK
New-AtwsContract
 .LINK
Set-AtwsContract
 
#>


  [CmdLetBinding(SupportsShouldProcess = $true, DefaultParameterSetName='Filter', ConfirmImpact='None')]
  Param
  (
# A filter that limits the number of objects that is returned from the API
    [Parameter(
      Mandatory = $true,
      ValueFromRemainingArguments = $true,
      ParametersetName = 'Filter'
    )]
    [ValidateNotNullOrEmpty()]
    [string[]]
    $Filter,

# Follow this external ID and return any external objects
    [Parameter(
      ParametersetName = 'Filter'
    )]
    [Parameter(
      ParametersetName = 'By_parameters'
    )]
    [Alias('GetRef')]
    [ValidateNotNullOrEmpty()]
    [ValidateSet('AccountID', 'BillToAccountContactID', 'BillToAccountID', 'BusinessDivisionSubdivisionID', 'ContactID', 'ContractExclusionSetID', 'ExclusionContractID', 'OpportunityID')]
    [string]
    $GetReferenceEntityById,

# Return entities of selected type that are referencing to this entity.
    [Parameter(
      ParametersetName = 'Filter'
    )]
    [Parameter(
      ParametersetName = 'By_parameters'
    )]
    [Alias('External')]
    [ValidateNotNullOrEmpty()]
    [ValidateSet('AccountToDo:ContractID', 'BillingItem:ContractID', 'Contract:ExclusionContractID', 'ContractBillingRule:ContractID', 'ContractBlock:ContractID', 'ContractCost:ContractID', 'ContractExclusionAllocationCode:ContractID', 'ContractExclusionRole:ContractID', 'ContractFactor:ContractID', 'ContractMilestone:ContractID', 'ContractNote:ContractID', 'ContractRate:ContractID', 'ContractRetainer:ContractID', 'ContractRoleCost:ContractID', 'ContractService:ContractID', 'ContractServiceAdjustment:ContractID', 'ContractServiceBundle:ContractID', 'ContractServiceBundleAdjustment:ContractID', 'ContractServiceBundleUnit:ContractID', 'ContractServiceUnit:ContractID', 'ContractTicketPurchase:ContractID', 'InstalledProduct:ContractID', 'Project:ContractID', 'PurchaseOrderItem:ContractID', 'Ticket:ContractID', 'TimeEntry:ContractID')]
    [string]
    $GetExternalEntityByThisEntityId,

# Return all objects in one query
    [Parameter(
      ParametersetName = 'Get_all'
    )]
    [switch]
    $All,

# A single user defined field can be used pr query
    [Parameter(
      ParametersetName = 'By_parameters'
    )]
    [Alias('UDF')]
    [ValidateNotNullOrEmpty()]
    [Autotask.UserDefinedField]
    $UserDefinedField,

# Contract ID
    [Parameter(
      ParametersetName = 'By_parameters'
    )]
    [ValidateNotNullOrEmpty()]
    [Nullable[long][]]
    $id,

# Client
    [Parameter(
      ParametersetName = 'By_parameters'
    )]
    [ValidateNotNullOrEmpty()]
    [Nullable[Int][]]
    $AccountID,

# Billing Preference
    [Parameter(
      ParametersetName = 'By_parameters'
    )]
    [string[]]
    $BillingPreference,

# Contract Compilance
    [Parameter(
      ParametersetName = 'By_parameters'
    )]
    [Nullable[boolean][]]
    $Compliance,

# Contract Contact
    [Parameter(
      ParametersetName = 'By_parameters'
    )]
    [ValidateLength(0,250)]
    [string[]]
    $ContactName,

# Category
    [Parameter(
      ParametersetName = 'By_parameters'
    )]
    [string[]]
    $ContractCategory,

# Contract Name
    [Parameter(
      ParametersetName = 'By_parameters'
    )]
    [Alias('Name')]
    [ValidateNotNullOrEmpty()]
    [ValidateLength(0,100)]
    [string[]]
    $ContractName,

# Contract Number
    [Parameter(
      ParametersetName = 'By_parameters'
    )]
    [ValidateLength(0,50)]
    [string[]]
    $ContractNumber,

# Contract Period Type
    [Parameter(
      ParametersetName = 'By_parameters'
    )]
    [string[]]
    $ContractPeriodType,

# Contract Type
    [Parameter(
      ParametersetName = 'By_parameters'
    )]
    [ValidateNotNullOrEmpty()]
    [string[]]
    $ContractType,

# Default Contract
    [Parameter(
      ParametersetName = 'By_parameters'
    )]
    [Nullable[boolean][]]
    $IsDefaultContract,

# Description
    [Parameter(
      ParametersetName = 'By_parameters'
    )]
    [ValidateLength(0,2000)]
    [string[]]
    $Description,

# End Date
    [Parameter(
      ParametersetName = 'By_parameters'
    )]
    [ValidateNotNullOrEmpty()]
    [Nullable[datetime][]]
    $EndDate,

# Estimated Cost
    [Parameter(
      ParametersetName = 'By_parameters'
    )]
    [Nullable[double][]]
    $EstimatedCost,

# Estimated Hours
    [Parameter(
      ParametersetName = 'By_parameters'
    )]
    [Nullable[double][]]
    $EstimatedHours,

# Estimated Revenue
    [Parameter(
      ParametersetName = 'By_parameters'
    )]
    [Nullable[double][]]
    $EstimatedRevenue,

# Contract Overage Billing Rate
    [Parameter(
      ParametersetName = 'By_parameters'
    )]
    [Nullable[double][]]
    $OverageBillingRate,

# Start Date
    [Parameter(
      ParametersetName = 'By_parameters'
    )]
    [ValidateNotNullOrEmpty()]
    [Nullable[datetime][]]
    $StartDate,

# Status
    [Parameter(
      ParametersetName = 'By_parameters'
    )]
    [ValidateNotNullOrEmpty()]
    [string[]]
    $Status,

# Service Level Agreement ID
    [Parameter(
      ParametersetName = 'By_parameters'
    )]
    [string[]]
    $ServiceLevelAgreementID,

# Contract Setup Fee
    [Parameter(
      ParametersetName = 'By_parameters'
    )]
    [Nullable[double][]]
    $SetupFee,

# purchase_order_number
    [Parameter(
      ParametersetName = 'By_parameters'
    )]
    [ValidateLength(0,50)]
    [string[]]
    $PurchaseOrderNumber,

# Time Reporting Requires Start and Stop Times
    [Parameter(
      ParametersetName = 'By_parameters'
    )]
    [ValidateNotNullOrEmpty()]
    [string[]]
    $TimeReportingRequiresStartAndStopTimes,

# opportunity_id
    [Parameter(
      ParametersetName = 'By_parameters'
    )]
    [Nullable[Int][]]
    $OpportunityID,

# Renewed Contract Id
    [Parameter(
      ParametersetName = 'By_parameters'
    )]
    [Nullable[long][]]
    $RenewedContractID,

# Contract Setup Fee Allocation Code ID
    [Parameter(
      ParametersetName = 'By_parameters'
    )]
    [Nullable[long][]]
    $SetupFeeAllocationCodeID,

# Exclusion Contract ID
    [Parameter(
      ParametersetName = 'By_parameters'
    )]
    [Nullable[long][]]
    $ExclusionContractID,

# Internal Currency Contract Overage Billing Rate
    [Parameter(
      ParametersetName = 'By_parameters'
    )]
    [Nullable[double][]]
    $InternalCurrencyOverageBillingRate,

# Internal Currency Contract Setup Fee
    [Parameter(
      ParametersetName = 'By_parameters'
    )]
    [Nullable[double][]]
    $InternalCurrencySetupFee,

# Contact ID
    [Parameter(
      ParametersetName = 'By_parameters'
    )]
    [Nullable[Int][]]
    $ContactID,

# Business Division Subdivision ID
    [Parameter(
      ParametersetName = 'By_parameters'
    )]
    [Nullable[Int][]]
    $BusinessDivisionSubdivisionID,

# Bill To Client ID
    [Parameter(
      ParametersetName = 'By_parameters'
    )]
    [Nullable[Int][]]
    $BillToAccountID,

# Bill To Client Contact ID
    [Parameter(
      ParametersetName = 'By_parameters'
    )]
    [Nullable[Int][]]
    $BillToAccountContactID,

# Contract Exclusion Set ID
    [Parameter(
      ParametersetName = 'By_parameters'
    )]
    [Nullable[Int][]]
    $ContractExclusionSetID,

    [Parameter(
      ParametersetName = 'By_parameters'
    )]
    [ValidateSet('id', 'AccountID', 'BillingPreference', 'Compliance', 'ContactName', 'ContractCategory', 'ContractName', 'ContractNumber', 'ContractPeriodType', 'ContractType', 'IsDefaultContract', 'Description', 'EndDate', 'EstimatedCost', 'EstimatedHours', 'EstimatedRevenue', 'OverageBillingRate', 'StartDate', 'Status', 'ServiceLevelAgreementID', 'SetupFee', 'PurchaseOrderNumber', 'TimeReportingRequiresStartAndStopTimes', 'OpportunityID', 'RenewedContractID', 'SetupFeeAllocationCodeID', 'ExclusionContractID', 'InternalCurrencyOverageBillingRate', 'InternalCurrencySetupFee', 'ContactID', 'BusinessDivisionSubdivisionID', 'BillToAccountID', 'BillToAccountContactID', 'ContractExclusionSetID', 'UserDefinedField')]
    [string[]]
    $NotEquals,

    [Parameter(
      ParametersetName = 'By_parameters'
    )]
    [ValidateSet('id', 'AccountID', 'BillingPreference', 'Compliance', 'ContactName', 'ContractCategory', 'ContractName', 'ContractNumber', 'ContractPeriodType', 'ContractType', 'IsDefaultContract', 'Description', 'EndDate', 'EstimatedCost', 'EstimatedHours', 'EstimatedRevenue', 'OverageBillingRate', 'StartDate', 'Status', 'ServiceLevelAgreementID', 'SetupFee', 'PurchaseOrderNumber', 'TimeReportingRequiresStartAndStopTimes', 'OpportunityID', 'RenewedContractID', 'SetupFeeAllocationCodeID', 'ExclusionContractID', 'InternalCurrencyOverageBillingRate', 'InternalCurrencySetupFee', 'ContactID', 'BusinessDivisionSubdivisionID', 'BillToAccountID', 'BillToAccountContactID', 'ContractExclusionSetID', 'UserDefinedField')]
    [string[]]
    $IsNull,

    [Parameter(
      ParametersetName = 'By_parameters'
    )]
    [ValidateSet('id', 'AccountID', 'BillingPreference', 'Compliance', 'ContactName', 'ContractCategory', 'ContractName', 'ContractNumber', 'ContractPeriodType', 'ContractType', 'IsDefaultContract', 'Description', 'EndDate', 'EstimatedCost', 'EstimatedHours', 'EstimatedRevenue', 'OverageBillingRate', 'StartDate', 'Status', 'ServiceLevelAgreementID', 'SetupFee', 'PurchaseOrderNumber', 'TimeReportingRequiresStartAndStopTimes', 'OpportunityID', 'RenewedContractID', 'SetupFeeAllocationCodeID', 'ExclusionContractID', 'InternalCurrencyOverageBillingRate', 'InternalCurrencySetupFee', 'ContactID', 'BusinessDivisionSubdivisionID', 'BillToAccountID', 'BillToAccountContactID', 'ContractExclusionSetID', 'UserDefinedField')]
    [string[]]
    $IsNotNull,

    [Parameter(
      ParametersetName = 'By_parameters'
    )]
    [ValidateSet('id', 'AccountID', 'BillingPreference', 'ContactName', 'ContractCategory', 'ContractName', 'ContractNumber', 'ContractPeriodType', 'ContractType', 'Description', 'EndDate', 'EstimatedCost', 'EstimatedHours', 'EstimatedRevenue', 'OverageBillingRate', 'StartDate', 'Status', 'ServiceLevelAgreementID', 'SetupFee', 'PurchaseOrderNumber', 'TimeReportingRequiresStartAndStopTimes', 'OpportunityID', 'RenewedContractID', 'SetupFeeAllocationCodeID', 'ExclusionContractID', 'InternalCurrencyOverageBillingRate', 'InternalCurrencySetupFee', 'ContactID', 'BusinessDivisionSubdivisionID', 'BillToAccountID', 'BillToAccountContactID', 'ContractExclusionSetID', 'UserDefinedField')]
    [string[]]
    $GreaterThan,

    [Parameter(
      ParametersetName = 'By_parameters'
    )]
    [ValidateSet('id', 'AccountID', 'BillingPreference', 'ContactName', 'ContractCategory', 'ContractName', 'ContractNumber', 'ContractPeriodType', 'ContractType', 'Description', 'EndDate', 'EstimatedCost', 'EstimatedHours', 'EstimatedRevenue', 'OverageBillingRate', 'StartDate', 'Status', 'ServiceLevelAgreementID', 'SetupFee', 'PurchaseOrderNumber', 'TimeReportingRequiresStartAndStopTimes', 'OpportunityID', 'RenewedContractID', 'SetupFeeAllocationCodeID', 'ExclusionContractID', 'InternalCurrencyOverageBillingRate', 'InternalCurrencySetupFee', 'ContactID', 'BusinessDivisionSubdivisionID', 'BillToAccountID', 'BillToAccountContactID', 'ContractExclusionSetID', 'UserDefinedField')]
    [string[]]
    $GreaterThanOrEquals,

    [Parameter(
      ParametersetName = 'By_parameters'
    )]
    [ValidateSet('id', 'AccountID', 'BillingPreference', 'ContactName', 'ContractCategory', 'ContractName', 'ContractNumber', 'ContractPeriodType', 'ContractType', 'Description', 'EndDate', 'EstimatedCost', 'EstimatedHours', 'EstimatedRevenue', 'OverageBillingRate', 'StartDate', 'Status', 'ServiceLevelAgreementID', 'SetupFee', 'PurchaseOrderNumber', 'TimeReportingRequiresStartAndStopTimes', 'OpportunityID', 'RenewedContractID', 'SetupFeeAllocationCodeID', 'ExclusionContractID', 'InternalCurrencyOverageBillingRate', 'InternalCurrencySetupFee', 'ContactID', 'BusinessDivisionSubdivisionID', 'BillToAccountID', 'BillToAccountContactID', 'ContractExclusionSetID', 'UserDefinedField')]
    [string[]]
    $LessThan,

    [Parameter(
      ParametersetName = 'By_parameters'
    )]
    [ValidateSet('id', 'AccountID', 'BillingPreference', 'ContactName', 'ContractCategory', 'ContractName', 'ContractNumber', 'ContractPeriodType', 'ContractType', 'Description', 'EndDate', 'EstimatedCost', 'EstimatedHours', 'EstimatedRevenue', 'OverageBillingRate', 'StartDate', 'Status', 'ServiceLevelAgreementID', 'SetupFee', 'PurchaseOrderNumber', 'TimeReportingRequiresStartAndStopTimes', 'OpportunityID', 'RenewedContractID', 'SetupFeeAllocationCodeID', 'ExclusionContractID', 'InternalCurrencyOverageBillingRate', 'InternalCurrencySetupFee', 'ContactID', 'BusinessDivisionSubdivisionID', 'BillToAccountID', 'BillToAccountContactID', 'ContractExclusionSetID', 'UserDefinedField')]
    [string[]]
    $LessThanOrEquals,

    [Parameter(
      ParametersetName = 'By_parameters'
    )]
    [ValidateSet('ContactName', 'ContractName', 'ContractNumber', 'ContractPeriodType', 'Description', 'PurchaseOrderNumber', 'UserDefinedField')]
    [string[]]
    $Like,

    [Parameter(
      ParametersetName = 'By_parameters'
    )]
    [ValidateSet('ContactName', 'ContractName', 'ContractNumber', 'ContractPeriodType', 'Description', 'PurchaseOrderNumber', 'UserDefinedField')]
    [string[]]
    $NotLike,

    [Parameter(
      ParametersetName = 'By_parameters'
    )]
    [ValidateSet('ContactName', 'ContractName', 'ContractNumber', 'ContractPeriodType', 'Description', 'PurchaseOrderNumber', 'UserDefinedField')]
    [string[]]
    $BeginsWith,

    [Parameter(
      ParametersetName = 'By_parameters'
    )]
    [ValidateSet('ContactName', 'ContractName', 'ContractNumber', 'ContractPeriodType', 'Description', 'PurchaseOrderNumber', 'UserDefinedField')]
    [string[]]
    $EndsWith,

    [Parameter(
      ParametersetName = 'By_parameters'
    )]
    [ValidateSet('ContactName', 'ContractName', 'ContractNumber', 'ContractPeriodType', 'Description', 'PurchaseOrderNumber', 'UserDefinedField')]
    [string[]]
    $Contains,

    [Parameter(
      ParametersetName = 'By_parameters'
    )]
    [ValidateSet('EndDate', 'StartDate', 'UserDefinedField')]
    [string[]]
    $IsThisDay
  )

    begin { 
        $entityName = 'Contract'
    
        # Enable modern -Debug behavior
        if ($PSCmdlet.MyInvocation.BoundParameters['Debug'].IsPresent) {
            $DebugPreference = 'Continue' 
        }
        else {
            # Respect configured preference
            $DebugPreference = $Script:Atws.Configuration.DebugPref
        }
    
        Write-Debug ('{0}: Begin of function' -F $MyInvocation.MyCommand.Name)

        if (!($PSCmdlet.MyInvocation.BoundParameters['Verbose'].IsPresent)) {
            # No local override of central preference. Load central preference
            $VerbosePreference = $Script:Atws.Configuration.VerbosePref
        }
    
    }


    process {
        # Parameterset Get_All has a single parameter: -All
        # Set the Filter manually to get every single object of this type
        if ($PSCmdlet.ParameterSetName -eq 'Get_all') { 
            $Filter = @('id', '-ge', 0)
        }
        # So it is not -All. If Filter does not exist it has to be By_parameters
        elseif (-not ($Filter)) {
    
            Write-Debug ('{0}: Query based on parameters, parsing' -F $MyInvocation.MyCommand.Name)
      
            # Convert named parameters to a filter definition that can be parsed to QueryXML
            [string[]]$Filter = ConvertTo-AtwsFilter -BoundParameters $PSBoundParameters -EntityName $entityName
        }
        # Not parameters, nor Get_all. There are only three parameter sets, so now we know
        # that we were passed a Filter
        else {
      
            Write-Debug ('{0}: Query based on manual filter, parsing' -F $MyInvocation.MyCommand.Name)
            
            # Parse the filter string and expand variables in _this_ scope (dot-sourcing)
            # or the variables will not be available and expansion will fail
            $Filter = . Update-AtwsFilter -Filterstring $Filter
        } 

        # Prepare shouldProcess comments
        $caption = $MyInvocation.MyCommand.Name
        $verboseDescription = '{0}: About to query the Autotask Web API for {1}(s).' -F $caption, $entityName
        $verboseWarning = '{0}: About to query the Autotask Web API for {1}(s). Do you want to continue?' -F $caption, $entityName
    
        # Lets do it and say we didn't!
        if ($PSCmdlet.ShouldProcess($verboseDescription, $verboseWarning, $caption)) { 
    
            # Make the query and pass the optional parameters to Get-AtwsData
            $result = Get-AtwsData -Entity $entityName -Filter $Filter `
                -NoPickListLabel:$NoPickListLabel.IsPresent `
                -GetReferenceEntityById $GetReferenceEntityById `
                -GetExternalEntityByThisEntityId $GetExternalEntityByThisEntityId
    
            Write-Verbose ('{0}: Number of entities returned by base query: {1}' -F $MyInvocation.MyCommand.Name, $result.Count)

        }
    }

    end {
        Write-Debug ('{0}: End of function' -F $MyInvocation.MyCommand.Name)
        if ($result) {
            Return $result
        }
    }


}