protected boolean editPreviousField(int currentRow) {
		if (locatePreviousEditField(currentRow)) {
			return beginEditField(model.getRow(), model.getColumn());
		}
		return false;
	}
Puts the previous editable cell into edit mode.
@param currentRow The currently selected row
@return true if there was a table cell that could be edited.
Ghidra/Features/Base/src/main/java/ghidra/app/plugin/core/compositeeditor/CompositeEditorPanel.java