Powershell导出函数详细消息

Question

这是我正在处理的脚本的开始：

#Requires –Version 4.0

$DebugPreference = 'SilentlyContinue'
$VerbosePreference = 'SilentlyContinue'

Import-Module UMF

#region Synchronized Collections

$FormHash = [hashtable]::Synchronized(@{})
$RunspaceHash = [hashtable]::Synchronized(@{})
$Jobs = [system.collections.arraylist]::Synchronized((New-Object System.Collections.ArrayList))
$JobCleanup = [hashtable]::Synchronized(@{})

#endregion

#region Pre-Startup Checks

$DebugPreference = 'Continue'
$VerbosePreference = 'Continue'
Write-Log Verbose Info 'Pre-startup checks started...'

当我开始这个时，我在控制台中得到了这个：

VERBOSE: Exporting function 'Get-FileHash'.
VERBOSE: Exporting function 'New-TemporaryFile'.
VERBOSE: Exporting function 'New-Guid'.
VERBOSE: Exporting function 'Format-Hex'.
VERBOSE: Exporting alias 'fhx'.
VERBOSE: Exporting function 'Import-PowerShellDataFile'.
VERBOSE: Exporting function 'ConvertFrom-SddlString'
VERBOSE: 2015-12-19 17:44:18,227: Info: Pre-startup checks started...

那么为什么在我明确地将VerbosePreference设置为SilentlyContinue时它会显示这个'导出函数'详细消息？

模块UMF只包含一个功能，即Write-Log。