public ElfProgramHeader getProgramHeaderProgramHeader() {
		ElfProgramHeader[] pharr = getProgramHeaders(ElfProgramHeaderConstants.PT_PHDR);
		if (pharr.length == 0 || pharr.length > 1) {
			return null;
			//throw new RuntimeException("Unable to locate PT_PHDR program header");
		}
		return pharr[0];
	}
Returns the program header with type of PT_PHDR.
Or, null if one does not exist.
@return the program header with type of PT_PHDR
Ghidra/Features/Base/src/main/java/ghidra/app/util/bin/format/elf/ElfHeader.java