public static String[] getOpenFileUsers(String repoName, String filePath) {
		String filePathKey = getFilePathKey(repoName, filePath);
		List<RemoteBufferFileImpl> rbfList = instancePathMap.get(filePathKey);
		if (rbfList != null) {
			HashSet<String> set = new HashSet<>();
			for (RemoteBufferFileImpl rbf : rbfList) {
				set.add(rbf.getUserClient());
			}
			String[] names = new String[set.size()];
			int index = 0;
			for (String name : set) {
				names[index++] = name;
			}
			return names;
		}
		return null;
	}
Returns list of users with open handles associated with the specified filePath.
@param filePath file path
Ghidra/Features/GhidraServer/src/main/java/db/buffers/RemoteBufferFileImpl.java