question: returns something useful , like `` f = this.fieldid op = this.opstring operand = this.operandstring concode_field_sep Op op concode_elem_sep int field concode_elem_sep Field operand concode_field_sep boolean filter concode_elem_sep Op getOp concode_elem_sep Op getOp
target: String function ( ) { return String . format ( "srini_string" , field , op , operand ) ; }