def identities = ops.collect { op ->
            def plannedNodes = op.result.executionPlan as List<Map<String, ?>>
            def transformStepNodeIdentities = plannedNodes*.nodeIdentity.findAll { it.nodeType == NodeIdentity.NodeType.TRANSFORM_STEP.name() }
            return transformStepNodeIdentities
        }
        def targetColors = (identities.collect { it*.targetAttributes.color }.flatten() as Set<String>)