private function _getClassNamesPrefixed($sFileContents)
{
$_aSelectedFieldTypeClassNames = array_keys($this->_getSelectedCustomFieldTypes($this->aCustomFieldTypes));
return preg_replace($this->_getClassPrefixRegexPatterns($_aSelectedFieldTypeClassNames), $this->_getClassPrefixRegexReplacements($_aSelectedFieldTypeClassNames), $sFileContents);
}