public int getNumberOfParameters() {
		return numberOfParameters & 0xff;
	}
The value of the num_parameters item gives the number of parameters of
the method represented by the method_info structure on which the annotation
occurs.
(This duplicates information that could be extracted from the method descriptor.)
@return the number of parameters for this method
Ghidra/Processors/JVM/src/main/java/ghidra/javaclass/format/attributes/RuntimeParameterAnnotationsAttribute.java