}

    @Override
    public VersionConstraint parseVersionConstraint(String constraint) {
        requireNonNull(constraint, "constraint");
        return new DefaultVersionConstraint(versionScheme, constraint);
    }

    static class DefaultVersion implements Version {
        private final VersionScheme versionScheme;

                ((MutationValidator) clientConfiguration).validateMutation(MutationValidator.MutationType.DEPENDENCY_CONSTRAINT_ATTRIBUTES)
            );
        }
        return addInternalDependencyConstraint(dependencyConstraint);
    }

    // For internal use only, allows adding a dependency constraint without issuing a deprecation warning

- `group`: The group of the dependency constraint.
- `module`: The module of the dependency constraint.
- `version`: optional. The version constraint of the dependency constraint.
- `reason`: optional. An explanation of why the constraint is used. It can typically be used to explain why a specific version is rejected or from where a platform comes from.

import javax.validation.Constraint;
import javax.validation.Payload;

import org.codelibs.core.lang.StringUtil;

@Target({ METHOD, FIELD, ANNOTATION_TYPE, CONSTRUCTOR, PARAMETER })
@Retention(RUNTIME)
@Documented
@Constraint(validatedBy = CustomSizeValidator.class)
public @interface CustomSize {

    String message() default "{javax.validation.constraints.Size.message}";

    Class<?>[] groups() default {};

				}

				// If the constraint contains an @ then
				// it specifies an exact mailbox name.
				if strings.Contains(constraint, "@") {
					if _, ok := parseRFC2821Mailbox(constraint); !ok {
						return nil, nil, nil, nil, fmt.Errorf("x509: failed to parse rfc822Name constraint %q", constraint)
					}
				} else {
					// Otherwise it's a domain name.

                                           boolean constraint,
                                           ResolvedComponentResult selectedComponent,
                                           ResolvedVariantResult selectedVariant,
                                           ResolvedComponentResult from) {
        super(requested, from, constraint);
        this.selectedComponent = selectedComponent;

                    byConstraint()
                }
                constraint('org:test:1.0', 'org:test:1.0')
            }
        }

        and:
        outputDoesNotContain("Cannot set attributes for constraint \"org:test:1.0\": it was probably created by a plugin using internal APIs")
    }

    def "attributes declared on constraints contribute to graph selection"() {
        given:
        settingsFile << """

                into "\$buildDir/libs"
            }
        """

        when:
        succeeds 'copyLibs'

        then:
        file('build/libs').assertHasDescendants('constraint-layout-1.0.2.aar', 'constraint-layout-solver-1.0.2.jar')
    }

type sourceBridge interface {
	listVersions() ([]Version, error)
}

type Constraint interface {
	copyTo(*ConstraintMsg)
}

type ConstraintMsg struct{}

func (m *ConstraintMsg) asUnpairedVersion() UnpairedVersion {
	return nil
}

type Version interface {
	Constraint
}

type UnpairedVersion interface {
	Version
}

var _ Constraint = UnpairedVersion(nil)


// derived test case from issue #21804

			t.Fatalf("failed to parse user unique, got error %v", err)
		}

		constraints := user.ParseUniqueConstraints()
		if len(constraints) != 1 {
			t.Fatalf("failed to find unique constraint, got %v", constraints)
		}

		for key := range constraints {
			if len(key) != 63 {
				t.Errorf("failed to find unique constraint, got %v", constraints)
			}
		}
	})

	t.Run("naming strategy", func(t *testing.T) {