void setHeadlessInstance(HeadlessAnalyzer ha) {
		headless = ha;
	}
Sets the current headless instance -- doing so gives the user the ability to manipulate 
headless analyzer-specific parameters.
<p>
This method is declared with no access modifier to only allow package-level (no subclass) 
access. This method is meant to only be used by the HeadlessAnalyzer class.

@param ha  HeadlessAnalyzer instance
Ghidra/Features/Base/src/main/java/ghidra/app/util/headless/HeadlessScript.java