Add the following Parameter to an operation extension of PlanDefinition/$apply:

 

{ "name":"mergeNestedCarePlans", "use":"in", "min":0, "max":"1", "documentation":"True if the result of any nested PlanDefinitions should be merged into the final care plan, false if they should be preserved as nested CarePlans in the output. If this parameter is not specified, the default behavior is to preserve nested care plans in the output.", "type":"boolean" }

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