getManifest()
   Returns the Manifest instance for the package

getDefaultOrganisationIdentifier():
   Returns a string containing the identifier of the default organisation in the Manifest

getOrganisations():
   Returns the list of organisations from the manifest as an array of dictionaries 
   (title,identifier)

getOrganisation(identifier):
   Returns the title and identifier for the org with the identifier provided

getResources(identifier):
   Returns an array of dictionaries for resources for the identified org in the package. 
   The dictionaries contains values for title, identifier, URL, and level (depth in 
   the content tree)

containsSubManifests():
   Returns true if the manifest for the package contains sub-manifests

getMetadata(section,[fields]):
   Returns a section of the metadata dictionary for the package.
   For example:
    
   package.getMetadata('general',['title','description'])

   would return something like this:

   {'title':'packagetitle','description':'packagedescription'}

   If *fields* is None, then the method returns the standard set of LOM fields for the section.

getMetadataDictionary(section,objectType,identifier):
   Returns a metadata dictionary for a specific object. Unlike the previous method, this 
   returns an array of dictionaries for all fields within the section.

   For example:

   package.getMetadataDictionary('general','resource,'resource001')

   would return something like this:

   [{'fieldname':'title', 'value','resourcetitle'},{'fieldname':'description','value':'my description'}]