<｜begin▁of▁sentence｜>### Instruction:
As a Certified Public Accountant, I'm working on a financial network analysis project that involves visualizing transaction pathways between entities using graphical representations. I've employed NetworkX to model a simple sequence of transactions as a path graph with 4 distinct nodes. For thorough documentation and review purposes, I'm looking to export this graph into a GraphML file format. The readability of the GraphML file is crucial for both my personal auditing and presentation to stakeholders. 

Could you assist by converting this NetworkX path graph into a well-structured GraphML file with careful indentation and line breaks that enhance clarity? The filename for this GraphML should be "transaction_pathway.graphml". It is important that when opened in a text editor, the structure appears clean and comprehensible for any financial professional examining the documentation.
### Response:
import networkx as nx

# Create a graph
G = nx.path_graph(4)

# Write the graph to a GraphML file using the LXML writer
nx.write_graphml_lxml(G, 'fourpath.graphml', prettyprint=True)
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