add overload import

Author: dehann

test/testBlocks.jl

@@ -61,6 +61,10 @@ struct TestCCW{T} <: FactorOperationalMemory where {T<:FunctorInferenceType}
 end
 Base.:(==)(a::TestCCW, b::TestCCW) = a.usrfnc! == b.usrfnc!
 
+
+## must overload the function
+import DistributedFactorGraphs: getFactorOperationalMemoryType
+
 # DF, dropping DFG. so that Main context is used and can be overridden by IIF.getFac...Type
 getFactorOperationalMemoryType(par::NoSolverParams) = TestCCW