ConstraintError Error types that can be thrown from lightweight code requirement routines. Declarationenum ConstraintError TopicsEnumeration CasesConstraintError.duplicateKeyConstraintError.malformedConstraintConstraintError.taskIsNoLongerValidConstraintError.unsupportedConstraintForRequirementType RelationshipsConforms ToCopyableEquatableErrorEscapableHashableSendableSendableMetatype