A class method refers to the indicated name as a local variable, but there is also a property of that name. Code Analyzer produces this message because the usage is confusing and might represent an error.
If you intend to reference the class property, precede the indicated name with an object and a dot. Often, the appropriate object is the first input argument of the method. For examples and more information, see How to Use Properties.
If you intend the indicated name to be a separate variable with the same name as the property, consider using a different name to avoid confusing someone unfamiliar with the code.
If you prefer to keep the current name, suppress the message as described in Adjust Code Analyzer Message Indicators and Messages.