library/core/class.pluginmanager.php
public function HasMethodOverride($ClassName, $MethodName) {
      return array_key_exists(strtolower($ClassName.'_'.$MethodName.'_Override'), $this->_MethodOverrideCollection) ? TRUE : FALSE;
   }
public function HasMethodOverride($ClassName, $MethodName) {
      return array_key_exists(strtolower($ClassName.'_'.$MethodName.'_Override'), $this->_MethodOverrideCollection) ? TRUE : FALSE;
   }
public function HasMethodOverride ( $ ClassName , $ MethodName ) { return array_key_exists ( strtolower ( $ ClassName . '_' . $ MethodName . '_Override' ) , $ this -> _MethodOverrideCollection ) ? TRUE : FALSE ; }
Checks to see if there are any plugins that override the method being
executed.

@param string The name of the class that called the method being overridden.
@param string The name of the method that is being overridden.
@return bool True if an override exists.
Checks to see if there are any plugins that override the method being executed .