code: private boolean lookForStore(int seen) {
          if (!OpcodeUtils.isStore(seen)) {
              return false;
          }
  
          storeReg = RegisterUtils.getStoreReg(this, seen);
          return true;
      }
docs: checks if the current opcode is a store, if so saves the register
  
  @param seen
  the opcode of the currently parsed instruction
  @return if a store was seen