https://beam.apache.org/releases/javadoc/2.71.0/org/apache/beam/sdk/io/cdap/PluginConstants.FormatProvider.html
PluginConstants.FormatProvider (Apache Beam 2.71.0)
declaration: package: org.apache.beam.sdk.io.cdap, class: PluginConstants, enum: FormatProvider
apache beam
https://learn.microsoft.com/en-us/dotnet/api/system.windows.forms.maskedtextbox.formatprovider?view=netframework-4.8.1&viewFallbackFrom=windowsdesktop-9.0
MaskedTextBox.FormatProvider Property (System.Windows.Forms) | Microsoft Learn
Gets or sets the IFormatProvider to use when performing type validation.
property systemwindows formsmaskedtextboxmicrosoftlearn