MSIR.0775 (what) required for (methtype)

A function or property method declaration in a class was not followed by a datatype. Since a function returns something of a specific datatype, and a property can be set to or returns something of a specific datatype, that datatype must be indicated in the function or property declaration.

 In the following property declaration, the datatype for the property is indicated by the <tt>To</tt> clause at the end as <tt>Float</tt>:<pre> property temperatureCelsius is float

The keyword is is not required in indicating the property of function datatype. Add the function or property datatype to the declaration.