internal/functions/Get-DbaMessageLevelModifier.ps1

function Get-DbaMessageLevelModifier {
<#
    .SYNOPSIS
        Returns all registered message level modifiers with similar name.
     
    .DESCRIPTION
        Returns all registered message level modifiers with similar name.
         
        Message level modifiers are created using New-DbaMessageLevelModifier and allow dynamically modifying the actual message level written by commands.
     
    .PARAMETER Name
        Default: "*"
        A name filter - only commands that are similar to the filter will be returned.
     
    .EXAMPLE
        PS C:\> Get-DbaMessageLevelModifier
         
        Returns all message level filters
     
    .EXAMPLE
        PS C:\> Get-DbaMessageLevelModifier -Name "mymodule.*"
         
        Returns all message level filters that start with "mymodule."
#>

    [CmdletBinding()]
    param (
        [string]
        $Name = "*"
    )
    
    ([Sqlcollaborative.Dbatools.Message.MessageHost]::MessageLevelModifiers.Values) | Where-Object Name -Like $Name
}