public ExtensionQuery(String pluginId,String extensionPointName,String attributeName){
  this.pluginId=extensionPointName.contains(".") ? null : pluginId;
  this.extensionPointName=extensionPointName;
  this.attributeName=attributeName;
}

public ExtensionQuery ( String pluginId , String extensionPointName , String attributeName ) { this . pluginId = extensionPointName . contains ( "." ) ? null : pluginId ; this . extensionPointName = extensionPointName ; this . attributeName = attributeName ; }
create a new instance .
