anchor.diff:  A simple 2 line change to `SparkGraphComputer` and `TinkerGraphComputer` solved this for TinkerPop. `GiraphGraphComputer` did not need an update as
   this feature was already naturally supported.
   
  +See: link:https://issues.apache.org/jira/browse/TINKERPOP-570[TINKERPOP-570]
  +
   Graph Language Providers
   ^^^^^^^^^^^^^^^^^^^^^^^^
   
  
positive.code: `GraphFilterInputFormat` as a way of wrapping an existing `InputFormat` to do filtering prior to `VertexProgram` or `MapReduce`
  execution.
  
  Job Chaining and GraphComputer
  ++++++++++++++++++++++++++++++
  
  
negative.code: as this method may be deprecated in a future release. Instead, barring any complex usages, simply rename the
  `CustomStep.addLocalChild(Traversal)` to `CustomStep.modulateBy(Traversal)`.
  
  See: link:https://issues.apache.org/jira/browse/TINKERPOP-1153[TINKERPOP-1153]
  
  TraversalEngine Deprecation and GraphProvider
  +++++++++++++++++++++++++++++++++++++++++++++
  
  