return new SystemPropertyRead() {
            @Override
            String getJavaExpression() {
                return "(String)System.getProperties().entrySet().stream().filter(e -> e.getKey().equals(\"$name\")).findFirst().get().getValue()";
            }

            @Override
            String getGroovyExpression() {
                return "System.properties.entrySet().find { it.key == '$name'}.value"

                }

                int hashCode() {
                    assert a != null && z != null
                    a.hashCode() ^ z.hashCode()
                }

                boolean equals(Object other) {
                    assert a != null && z != null
                    (other instanceof Circular) && a == other.a && z == other.z
                }

                String toString() {

        !spec.isSatisfiedBy(GradleVersion.version("1.5"))
        !spec.isSatisfiedBy(GradleVersion.version("1.5-rc-1"))
        !spec.isSatisfiedBy(GradleVersion.version("12.45"))
    }

    def "equals version constraint matches versions with same base version"() {
        def spec = new GradleVersionSpec().toSpec("=1.4")

        expect:
        spec.isSatisfiedBy(GradleVersion.version("1.4"))

import org.gradle.internal.deprecation.Documentation
import org.gradle.internal.operations.OperationIdentifier
import spock.lang.Specification

class DefaultProblemTest extends Specification {
    def "unbound builder result is equal to original"() {
        def additionalData = Mock(AdditionalData)
        def problem = createTestProblem(severity, additionalData)

        def newProblem = problem.toBuilder().build()
        expect: