method: parse YAML content

Change-Id: Icf80254fe5f8271c0e32cd7e49c910080b7451c3
Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
diff --git a/tools/sdbusplus/interface.py b/tools/sdbusplus/interface.py
index 9b55001..d260f92 100644
--- a/tools/sdbusplus/interface.py
+++ b/tools/sdbusplus/interface.py
@@ -2,6 +2,7 @@
 import yaml
 from .namedelement import NamedElement
 from .property import Property
+from .method import Method
 
 class Interface(NamedElement, object):
     @staticmethod
@@ -18,5 +19,7 @@
     def __init__(self, **kwargs):
         self.properties = [ Property(**p) for p in
             kwargs.pop('properties', []) ]
+        self.methods = [ Method(**m) for m in
+            kwargs.pop('methods', []) ]
 
         super(Interface, self).__init__(**kwargs)
diff --git a/tools/sdbusplus/method.py b/tools/sdbusplus/method.py
new file mode 100644
index 0000000..d7635e1
--- /dev/null
+++ b/tools/sdbusplus/method.py
@@ -0,0 +1,12 @@
+from .property import Property
+from .namedelement import NamedElement
+
+class Method(NamedElement):
+    def __init__(self, **kwargs):
+        self.parameters = [ Property(**p) for p in
+            kwargs.pop('parameters', []) ]
+        self.returns = [ Property(**r) for r in
+            kwargs.pop('returns', []) ]
+        self.errors = kwargs.pop('errors', [])
+
+        super(Method, self).__init__(**kwargs)