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

        when:
        EclipseProject project = loadToolingModel(EclipseProject)

               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: