Annotation which indicates that a method parameter should be bound to a
name-value pair within a path segment. Supported for
annotated handler methods.
If the method parameter type is
Map and a matrix variable
name is specified, then the matrix variable value is converted to a
Map assuming an appropriate conversion strategy is available.
If the method parameter is
Map<String, String> or
and a variable name is not specified, then the map is populated with all
matrix variable names and values.