def nodeIds = (identities*.transformStepNodeId as Set<Long>)
            [(color): Iterables.getOnlyElement(nodeIds)]
        }
    }

    private Map<String, List<Map<String, ?>>> getTransformStepIdentities() {
        def ops = buildOperations.all(CalculateTaskGraphBuildOperationType)
        def identities = ops.collect { op ->
            def plannedNodes = op.result.executionPlan as List<Map<String, ?>>