question: checks if the given key is present in bst . concode_field_sep Value val concode_elem_sep Node left concode_elem_sep Node root concode_elem_sep Node right concode_elem_sep Key key concode_elem_sep int N concode_field_sep Key ceiling concode_elem_sep Node ceiling concode_elem_sep Key select concode_elem_sep Key select concode_elem_sep Key min concode_elem_sep Node min concode_elem_sep int size concode_elem_sep int size concode_elem_sep Key max concode_elem_sep Node max concode_elem_sep Value get concode_elem_sep Value get concode_elem_sep boolean isEmpty concode_elem_sep int rank concode_elem_sep int rank concode_elem_sep void deleteMin concode_elem_sep Node deleteMin concode_elem_sep Key floor concode_elem_sep Node floor concode_elem_sep void delete concode_elem_sep Node delete concode_elem_sep void put concode_elem_sep Node put
target: boolean function ( Key arg0 ) { if ( arg0 == null ) throw new IllegalArgumentException ( "srini_string" ) ; Value loc0 = get ( arg0 ) ; return loc0 != null ; }