|Calculates a union of any features that have a common value in the specified field. The output will only contain the specified field. Example: Disolving a county shapefile based on state name to produce a single polygon shaped like the state.
||The original featureSet to disolve the features of
||The string field name to use for the disolve operation
A featureset where the geometries of features with the same attribute in the specified field have been combined.