docs(api): add missing information

Author: jourdain

setup.cfg

@@ -1,6 +1,6 @@
 [metadata]
 name = trame-matplotlib
-version = 2.0.0rc4
+version = 2.0.0rc5
 description = Markdown widget for trame
 long_description = file: README.rst
 long_description_content_type = text/x-rst

trame_matplotlib/widgets/matplotlib.py

@@ -25,17 +25,16 @@ def no_encoding(_data):
 
 
 class Figure(AbstractElement):
-    _next_id = 0
-
     """
     Create a matplotlib figure viewer element
 
     :param figure: Matplotlib figure to show (default: None)
 
     >>> component1 = Figure(figure=fig1)
-    >>> component2 = Figure(fig2)
+    >>> component2 = Figure()
     >>> component2.update(fig1)
     """
+    _next_id = 0
 
     def __init__(self, figure=None, **kwargs):
         Figure._next_id += 1
@@ -51,6 +50,11 @@ def __init__(self, figure=None, **kwargs):
         self.update()
 
     def update(self, figure=None, **kwargs):
+        """
+        Update the figure to show.
+
+        :param figure: Matplotlib figure object
+        """
         if figure:
             self._figure = figure
 
@@ -59,6 +63,7 @@ def update(self, figure=None, **kwargs):
 
     @property
     def key(self):
+        """Return the name of the state variable used internally"""
         return self._key
 
     @staticmethod