public boolean isFilesystemMountedAt(FSRL fsrl) {
		return fsInstanceManager.isFilesystemMountedAt(fsrl);
	}
Returns true of there is a {@link GFileSystem filesystem} mounted at the requested
{@link FSRL} location.

@param fsrl {@link FSRL} container to query for mounted filesystem
@return boolean true if filesystem mounted at location.
Ghidra/Features/Base/src/main/java/ghidra/formats/gfilesystem/FileSystemService.java