Langchain_community.graphs.NebulaGraph object has no attribute "add_graph_documents"

[HuntZhaozq]

Checked other resources

• I added a very descriptive title to this issue.
• I searched the LangChain documentation with the integrated search.
• I used the GitHub search to find a similar question and didn't find it.
• I am sure that this is a bug in LangChain rather than my code.
• The bug is not resolved by updating to the latest stable version of LangChain (or the specific integration package).

Example Code

from Langchain_community.graphs import NebulaGraph
graph = NebulaGraph()
graph.add_graph_documents(graph_documents)

Error Message and Stack Trace (if applicable)

NebulaGraph object has no attribute "add_graph_documents"

Description

Why this NebulaGraph did not have the function of add_graph_documents? When does it support?

System Info

linux