void refresh(int byteSize, int byteOffset, int bitSize, int bitOffset) {
		this.allocationByteOffset = byteOffset;
		this.allocationByteSize = byteSize;
		updatePreferredSize();
		bitFieldAllocation = new BitFieldAllocation(bitSize, bitOffset);
		repaint();
	}
Refresh the bitfield allocation following an {@link #editMode} change or
change in allocation unit size/offset.
When {@link #editMode} is not {@link EditMode#NONE} the specified
bitSize and bitOffset specify the active edit bitfield.
@param byteSize allocation unit byte size
@param byteOffset allocation unit byte offset within composite
@param bitSize component bitsize
@param bitOffset component lsb bit offset from lsb of allocation unit.
Ghidra/Features/Base/src/main/java/ghidra/app/plugin/core/compositeeditor/BitFieldPlacementComponent.java