String fieldName = instruction.getFieldName(cpg);
Expression right = context.getExpressions().pop();
Expression left = context.getExpressions().pop();
FieldAccess fieldRef = new FieldAccess(context.getCurrentInstruction(), left, fieldName);
Assignment assignment = new Assignment(context.getCurrentInstruction(), fieldRef, right);
StatementIntermediate complete = new StatementIntermediate(context.getCurrentInstruction(), assignment);
context.pushIntermediateToInstruction(complete);