metadata.xml

<edmx:Edmx Version="4.0" xmlns:edmx="http://docs.oasis-open.org/odata/ns/edmx"><edmx:DataServices ><Schema xmlns="http://docs.oasis-open.org/odata/ns/edm" Namespace="default"><EntityType Name="User"><Key ><PropertyRef Name="username" /></Key><Property Name="username" Type="Edm.String" Nullable="false" /></EntityType><EntityContainer Name="DefaultContainer"><EntitySet Name="users" EntityType="default.User" /></EntityContainer><Action Name="login" IsBound="true"><ReturnType Type="default.User" /><Parameter Name="username" Type="Edm.String" /><Parameter Name="password" Type="Edm.String" /><Parameter Name="bindingParameter" Type="Collection(default.User)" /></Action><Action Name="logout" IsBound="true"><Parameter Name="bindingParameter" Type="Collection(default.User)" /></Action><Function Name="current" IsBound="true"><ReturnType Type="default.User" /><Parameter Name="bindingParameter" Type="Collection(default.User)" /></Function><Function Name="isAuthenticated" IsBound="true"><ReturnType Type="default.Object" /><Parameter Name="bindingParameter" Type="Collection(default.User)" /></Function></Schema></edmx:DataServices></edmx:Edmx>