Catel.Fody.Weaving.XmlSchemas.XmlSchemasWeaver.AddGetXmlSchemaMethod C# (CSharp) Method

        private void AddGetXmlSchemaMethod(CatelType catelType)
        {
            var catelTypeDefinition = catelType.TypeDefinition;

            var methodName = GetXmlSchemaMethodName(catelType);

            var alreadyHandled = (from method in catelTypeDefinition.Methods
                                  where method.Name == methodName
                                  select method).Any();
            if (alreadyHandled)
            {
                return;
            }

            var getTypeFromHandle = catelTypeDefinition.Module.GetMethod("GetTypeFromHandle");
            var importedGetTypeFromHandle = catelTypeDefinition.Module.Import(getTypeFromHandle);

            var xmlSchemaManager = (TypeDefinition)catelTypeDefinition.Module.FindType("Catel.Core", "Catel.Runtime.Serialization.Xml.XmlSchemaManager");
            if (xmlSchemaManager == null)
            {
                // Support versions before 3.8
                xmlSchemaManager = (TypeDefinition)catelTypeDefinition.Module.FindType("Catel.Core", "Catel.Runtime.Serialization.XmlSchemaManager");
            }

            var getXmlSchemaMethodOnXmlSchemaManager = catelTypeDefinition.Module.Import(xmlSchemaManager.Methods.First(x => x.IsStatic && x.Name == "GetXmlSchema"));

            //public static XmlQualifiedName GetXmlSchema(XmlSchemaSet schemas)
            //{
            //    Type callingType = typeof(int);
            //    return XmlSchemaManager.GetXmlSchema(callingType, schemas);
            //}

            var getXmlSchemaMethod = new MethodDefinition(methodName, MethodAttributes.Public | MethodAttributes.Static, catelTypeDefinition.Module.Import(_msCoreReferenceFinder.XmlQualifiedName));

            getXmlSchemaMethod.Parameters.Add(new ParameterDefinition("xmlSchemaSet", ParameterAttributes.None, catelTypeDefinition.Module.Import(_msCoreReferenceFinder.XmlSchemaSet)));

            var ldloc1Instruction = Instruction.Create(OpCodes.Ldloc_1);

            var instructions = getXmlSchemaMethod.Body.Instructions;
            instructions.Insert(0, Instruction.Create(OpCodes.Nop),
                                Instruction.Create(OpCodes.Ldtoken, catelTypeDefinition),
                                Instruction.Create(OpCodes.Call, importedGetTypeFromHandle),
                                Instruction.Create(OpCodes.Stloc_0),
                                Instruction.Create(OpCodes.Ldloc_0),
                                Instruction.Create(OpCodes.Ldarg_0),
                                Instruction.Create(OpCodes.Call, getXmlSchemaMethodOnXmlSchemaManager),
                                Instruction.Create(OpCodes.Stloc_1),
                                Instruction.Create(OpCodes.Br_S, ldloc1Instruction),
                                ldloc1Instruction,
                                Instruction.Create(OpCodes.Ret));

            getXmlSchemaMethod.Body.InitLocals = true;
            getXmlSchemaMethod.Body.Variables.Add(new VariableDefinition("callingType", catelTypeDefinition.Module.Import(catelTypeDefinition.Module.FindType("mscorlib", "System.Type"))));
            getXmlSchemaMethod.Body.Variables.Add(new VariableDefinition(catelTypeDefinition.Module.Import(_msCoreReferenceFinder.XmlQualifiedName)));

            catelTypeDefinition.Methods.Add(getXmlSchemaMethod);

            getXmlSchemaMethod.MarkAsCompilerGenerated(_msCoreReferenceFinder);
        }