vertexProperty 

How to designate the vertex property name to use when loading data from a data file.

Synopsis 

vertexProperty "propertyName"

Description 

Sets the vertex property of a vertex to the given name.

Examples 

Set vertexProperty in a mapping script to badge. The values of the vertex property will be read based on the values set in the value field of badge.
vertexProperty "badge", {
      "value" "since"
   }
For this mapping, the data could be:
{ "name":"Jane Doe", "gender":"M", "badge" : { "value": "Gold Badge", "since" : 2012 } }