public Long getStackParameterOffset() {
		return inputParams.getStackParameterOffset();
	}
Return the byte offset where the first input parameter on the stack is allocated.
The value is relative to the incoming stack pointer of the called function.
For normal stacks, this is the offset of the first byte in the first parameter.
For reverse stacks, this is the offset immediately after the last byte of the parameter.
@return the byte offset of the first param
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/model/lang/PrototypeModel.java