code: public static GraphCsvReader fromCsvReader(String verticesPath, String edgesPath, ExecutionEnvironment context) {
  		return new GraphCsvReader(verticesPath, edgesPath, context);
  	}
docs: Creates a Graph from a CSV file of vertices and a CSV file of edges.
  
  @param verticesPath path to a CSV file with the Vertex data.
  @param edgesPath path to a CSV file with the Edge data
  @param context the Flink execution environment.
  @return An instance of {@link org.apache.flink.graph.GraphCsvReader},
  on which calling methods to specify types of the Vertex ID, Vertex value and Edge value returns a Graph.
  
  @see org.apache.flink.graph.GraphCsvReader#types(Class, Class, Class)
  @see org.apache.flink.graph.GraphCsvReader#vertexTypes(Class, Class)
  @see org.apache.flink.graph.GraphCsvReader#edgeTypes(Class, Class)
  @see org.apache.flink.graph.GraphCsvReader#keyType(Class)