Add two methods to interface (old change)

pep-0262.txt

@@ -133,6 +133,14 @@ class InstallationDatabase:
         enumerated in no particular order.
         """
 
+    def find_package (self, path):
+        """find_file(path:string) : Package
+        Search and return the package containing the file 'path'.  
+        Returns None if the file doesn't belong to any package
+        that the InstallationDatabase knows about.
+        XXX should this work for directories?
+        """
+
 class Package:
     """Instance attributes:
     name : string
@@ -163,6 +171,19 @@ class Package:
         checksum all be provided as parameters to this method instead?
         """
 
+    def has_file (self, path):
+        """has_file(path:string) : Boolean
+        Returns true if the specified path belongs to a file in this
+        package.
+        """
+
+     def check_file (self, path):
+        """check_file(path:string) : Boolean
+        Checks whether the file's size, checksum, and ownership match,
+        returning true if they do.
+        """
+        
+     
 
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