private Address createFdeLength(Address addr) throws MemoryAccessException {

		/* 
		 * Create a new FDE Length field at the specified address 
		 * and sets an appropriate comment for the new structure.
		 */
		String comment = "(FDE) Length";
		createAndCommentData(program, addr, dwordDT, comment, CommentType.EOL);
		intLength = program.getMemory().getInt(addr);

		return addr.add(DWORD_LEN);
	}
Creates the FDE Length field at the specified address.

@param addr Address at which the FDE length field should be created.
@return Address immediately following the FDE Length field.
@throws MemoryAccessException if the required memory can't be read
Ghidra/Features/Base/src/main/java/ghidra/app/plugin/exceptionhandlers/gcc/structures/ehFrame/FrameDescriptionEntry.java