containers 'containerPath'
                   file {
                       whenMerged { classpath ->
                           classpath.entries.find { it.path == 'containerPath' }.entryAttributes.customKey = 'customValue'
                       }
                   }
               }
           }
        """

        when:
        EclipseProject project = loadToolingModel(EclipseProject)

	G []int             `json:"fg"`
	H []bool            `json:"fh"`
	I []float32         `json:"fi"`
	J []byte            `json:"fj"`
}

type G struct {
	CustomValue1   CustomValue    `json:"customValue1"`
	CustomValue2   *CustomValue   `json:"customValue2"`
	CustomPointer1 CustomPointer  `json:"customPointer1"`
	CustomPointer2 *CustomPointer `json:"customPointer2"`
}

type H struct {
	A A `json:"ha"`

               classpath {
                   file {
                       whenMerged { classpath ->
                           classpath.entries.find { it.kind == 'src' && it.path == 'src/main/java' }.entryAttributes.customKey = 'customValue'
                       }
                   }
               }
           }
        """
        file('src/main/java').mkdirs()

        when:

        hasNoSystemProperty('mySystemProperty')
    }

    def "Can define new system property"() {
        when:
        runTask { withSystemProperties('customKey' : 'customValue') }

        then:
        hasSystemProperty('customKey', 'customValue')
    }

    def "Can override existing system properties"() {
        when:
        runTask { withSystemProperties('mySystemProperty' : 'newValue') }

        then: