public boolean containsKey(char[] text, int off, int len) {if(text == null)throw new NullPointerException();return false;}

public boolean containsKey ( char [ ] text , int off , int len ) { if ( text == null ) throw new NullPointerException ( ) ; return false ; }
public override bool ContainsKey(char[] text, int offset, int length){if (text == null){throw new ArgumentNullException("text");}return false;}
