<｜begin▁of▁sentence｜>### Instruction:
Imagine you're working in a clinical research environment where you are studying the pathways of respiratory therapy procedures and you've just managed to map out a network of these pathways using NetworkX with 4 crucial steps. To ensure that this important information can be shared with your colleagues and stored securely, could you describe the method to convert your NetworkX pathway diagram into a GML file? Let's call this file "RespiratoryPathways.gml". How would this graph be properly documented into said file for future reference or to facilitate collaboration with other healthcare facilities that utilize GML formatted data?
### Response:
import networkx as nx

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

# Write the graph to a file in GML format
nx.write_gml(G, 'path_graph.gml')
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