Property manager section
========================

The marshall section blueprint name is
``quintagroup.transmogrifier.propertymanager``.

Property manager needs at least 1 piece of information: the path to the object
to update. To determine the path, the marshall section inspects each
item and looks for one key, as described below. Any item missing this piece of
information will be skipped. Similarly, items with a path that doesn't exist
or are not objects that provide OFS.interfaces.IPropertyManager will be skipped as well.

Paths to objects are always interpreted as relative to the context.

>>> import pprint
>>> propertymanager = """
... [transmogrifier]
... pipeline =
...     propertymanagersource
...     propertymanager
...     printer
...     dataprinter
...     
... [propertymanagersource]
... blueprint = quintagroup.transmogrifier.tests.propertymanagersource
... 
... [propertymanager]
... blueprint = quintagroup.transmogrifier.propertymanager
... exclude = 
...     propone
...     proptwo
...     notexistentprop
... 
... [printer]
... blueprint = collective.transmogrifier.sections.tests.pprinter
... 
... [dataprinter]
... blueprint = quintagroup.transmogrifier.tests.dataprinter
... print = 
...     _files
...     propertymanager
...     data
... """
>>> registerConfig(u'quintagroup.transmogrifier.tests.propertymanager', propertymanager)
>>> transmogrifier(u'quintagroup.transmogrifier.tests.propertymanager') # doctest: +ELLIPSIS, +REPORT_NDIFF
{'_excluded_properties': ('proptwo', 'propthree'),
 '_files': {'propertymanager': {'data': ...
                                'name': '.properties.xml'}},
 '_path': 'spam/eggs/foo'}
<?xml version="1.0" encoding="utf-8"?>
<properties>
  <property name="propfour">
    value
  </property>
</properties>
<BLANKLINE>
{'_path': 'not/existing/bar'}
{}
{'_path': 'spam/eggs/notatcontent'}
>>> pprint.pprint(plone.updated)
('spam/eggs/foo',)