Explicit interface implementation

interface InterfaceA:
def SomeMethod()

interface InterfaceB:
def SomeMethod()

class SomeClass(InterfaceA, InterfaceB):
def InterfaceA.SomeMethod():
print "In InterfaceA.SomeMethod"
def InterfaceB.SomeMethod():
print "In InterfaceB.SomeMethod"

c = SomeClass()

c.SomeMethod() // Error
c.InterfaceA.SomeMethod() // Error

ia = c as InterfaceA
ia.SomeMethod() // "In InterfaceA.SomeMethod"

ib = c as InterfaceB
ib.SomeMethod() // "In InterfaceB.SomeMethod"

From the c# language specification:

"It is a compile-time error for an explicit interface member implementation
to include access modifiers, and it is a compile-time error to include the
modifiers abstract, virtual, override, or static."