concat method

@override PromptValue concat(PromptValue other)

Merges this prompt value with another by concatenating the content.

Implementation

@override
PromptValue concat(
  final PromptValue other,
) =>
    switch (other) {
      final StringPromptValue other => StringPromptValue(value + other.value),
      final ChatPromptValue other => ChatPromptValue([
          ChatMessage.humanText(value),
          ...other.messages,
        ]),
    };