original_string: public function getConstraint($fieldName, $constraintName)
      {
          if (isset($this->constraints[$fieldName][$constraintName])) {
              return $this->constraints[$fieldName][$constraintName];
          }
      }
code: public function getConstraint($fieldName, $constraintName)
      {
          if (isset($this->constraints[$fieldName][$constraintName])) {
              return $this->constraints[$fieldName][$constraintName];
          }
      }
code_tokens: public function getConstraint ( $ fieldName , $ constraintName ) { if ( isset ( $ this -> constraints [ $ fieldName ] [ $ constraintName ] ) ) { return $ this -> constraints [ $ fieldName ] [ $ constraintName ] ; } }
docstring: get a constraint by fieldName, constraintName
  @param string $fieldName
  @param string $constraintName
  @return ZenValidatorConstraint
docstring_tokens: get a constraint by fieldName constraintName