System.Reflection.CustomAttribute.IsDefined C# (CSharp) Method

        internal static bool IsDefined(Assembly assembly, RuntimeType caType) 
        {
            if (PseudoCustomAttribute.IsDefined(assembly, caType))
                return true;

            return IsCustomAttributeDefined(assembly.ManifestModule, assembly.AssemblyHandle.GetToken(), caType);
        }

 public override bool IsDefined(Type attributeType, bool inherit)
 {
     return(CustomAttribute.IsDefined(this, attributeType, inherit));
 }