class_docstr: Breadth First Walk that generates a sampled number of paths from a starting node.
  It can be used to extract a random sub-graph starting from a set of initial nodes from Neo4j database.
code: def __init__(self, graph):
      if not isinstance(graph, Neo4jStellarGraph):
          raise TypeError(
              "Graph must be a Neo4jStellarGraph or Neo4jStellarDiGraph."
          )
      self.graph = graph
  
file_path: stellargraph/stellargraph/connector/neo4j/sampler.py
imports: from ...core.experimental import experimental
  from .graph import Neo4jStellarGraph, Neo4jStellarDiGraph
label_desc: Use image node_id 1 to create a new Neo4jSampledBreadthFirstWalk object  with example: obj = Neo4jSampledBreadthFirstWalk(graph)