wikimedia / mediawiki-extensions-WikibaseQualityConstraints

		$constraints = $this->constraintLookup->queryConstraintsForProperty( $propertyId );

		$result = [];

		foreach ( $constraints as $constraint ) {

			$problems = $this->checkCommonConstraintParameters( $constraint );

			if ( array_key_exists( $constraint->getConstraintTypeItemId(), $this->checkerMap ) ) {

				$checker = $this->checkerMap[$constraint->getConstraintTypeItemId()];

				$problems = array_merge( $problems, $checker->checkConstraintParameters( $constraint ) );

			}

			$result[$constraint->getConstraintId()] = $problems;

		}

		return $result;

	}

		$propertyId = $this->statementGuidParser->parse( $constraintId )->getEntityId();

		$constraints = $this->constraintLookup->queryConstraintsForProperty( $propertyId );

		foreach ( $constraints as $constraint ) {

			if ( $constraint->getConstraintId() === $constraintId ) {

				$problems = $this->checkCommonConstraintParameters( $constraint );

				if ( array_key_exists( $constraint->getConstraintTypeItemId(), $this->checkerMap ) ) {

					$checker = $this->checkerMap[$constraint->getConstraintTypeItemId()];

					$problems = array_merge( $problems, $checker->checkConstraintParameters( $constraint ) );

				}

				return $problems;

			}

		}

		return null;

	}