propertyValue = properties['prop']
        }

        @Override protected void store(Properties properties) {
            properties['prop'] = propertyValue
        }
    }

    def loadsFromPropertiesFile() {
        def inputFile = tmpDir.file('input.properties')
        inputFile.text = 'prop=value'

        when:
        object.load(inputFile)

        then:
        propertyValue == 'value'
    }