esim.saip: Better docstring about FsNode class

Change-Id: Id9d196e8d9b1d1b892ec50100b170d72d2c3910b
---
M pySim/esim/saip/__init__.py
1 file changed, 4 insertions(+), 1 deletion(-)


git pull ssh://gerrit.osmocom.org:29418/pysim refs/changes/37/41737/1

diff --git a/pySim/esim/saip/__init__.py b/pySim/esim/saip/__init__.py
index f661745..dacd35e 100644
--- a/pySim/esim/saip/__init__.py
+++ b/pySim/esim/saip/__init__.py
@@ -1885,7 +1885,10 @@
 
 
 class FsNode:
-    """A node in the filesystem hierarchy."""
+    """A node in the filesystem hierarchy. Each node can have a parent node and any number of children.
+    Each node is identified uniquely within the parent by its numeric FID and its optional human-readable
+    name.  Each node usually is associated with an instance of the File class for the actual content of
+    the file.  FsNode is the base class used by more  specific nodes, such as FsNode{EF,DF,ADF,MF}."""
     def __init__(self, fid: int, parent: Optional['FsNode'], file: Optional[File] = None,
                  name: Optional[str] = None):
         self.fid = fid

