code: func (self *stateObject) GetState(db Database, key common.Hash) common.Hash {
  	// If we have a dirty value for this state entry, return it
  	value, dirty := self.dirtyStorage[key]
  	if dirty {
  		return value
  	}
  	// Otherwise return the entry's original value
  	return self.GetCommittedState(db, key)
  }
docs: // GetState retrieves a value from the account storage trie.