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  "displayName" : "proximityBySelection", 
  "category" : "", 
  "helpUrl" : "http://www.gruppoiit.lispa.it/geomobileoutput/geogp_proximity/proximityBySelection.htm", 
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      "parameterType" : "esriGPParameterTypeRequired", 
      "category" : "", 
      "choiceList" : []
    }, 
    {
      "name" : "x", 
      "dataType" : "GPDouble", 
      "displayName" : "x", 
      "direction" : "esriGPParameterDirectionInput", 
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      "parameterType" : "esriGPParameterTypeRequired", 
      "category" : "", 
      "choiceList" : []
    }, 
    {
      "name" : "y", 
      "dataType" : "GPDouble", 
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      "parameterType" : "esriGPParameterTypeRequired", 
      "category" : "", 
      "choiceList" : []
    }, 
    {
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      "dataType" : "GPString", 
      "displayName" : "idList", 
      "direction" : "esriGPParameterDirectionInput", 
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      "parameterType" : "esriGPParameterTypeRequired", 
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      "choiceList" : []
    }, 
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      "parameterType" : "esriGPParameterTypeOptional", 
      "category" : "", 
      "choiceList" : []
    }, 
    {
      "name" : "out", 
      "dataType" : "GPFeatureRecordSetLayer", 
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      "direction" : "esriGPParameterDirectionOutput", 
      "defaultValue" : {
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      "parameterType" : "esriGPParameterTypeDerived", 
      "category" : "", 
      "choiceList" : []
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}