You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: H1ScalarProduct.m
    path of file: ./repos/Swan/Topology Optimization/Operators
    
    the code of the file until where you have to start completion: classdef H1ScalarProduct < handle

    properties (Access = private)
        integrator
        quadrature
    end

    methods (Access = public)
        funct
    
function sp = compute(obj,f,g,epsilon)
            Df  = f.evaluateGradient(obj.quadrature.posgp);
            Dg  = g.evaluateGradient(obj.quadrature.posgp);
            spM = obj.integrator.compute(f,g);
            spK = obj.integrator.compute(Df,Dg);
            sp  = spM+epsilon^2*spK;
        end