/*
Find a `File` object in a form data value. It can be either the value itself, or
in a `fileContents` property of the value.
function getFileValue( v ) {
	if ( isFile( v ) ) {
		return v;
	}

	if ( typeof v === 'object' && isFile( v.fileContents ) ) {
		return v.fileContents;
	}

	return null;
}