Merge pull request openai#140 from openai/dev/att/fn-content-nullable

Fix content nullable across messages

openapi.yaml

@@ -5717,7 +5717,6 @@ components:
  title: System message
  properties:
  content:
- nullable: true
  description: The contents of the system message.
  type: string
  role:
@@ -5736,7 +5735,6 @@ components:
  title: User message
  properties:
  content:
- nullable: true
  description: |
  The contents of the user message.
  oneOf:
@@ -5769,7 +5767,7 @@ components:
  nullable: true
  type: string
  description: |
- The contents of the assistant message.
+ The contents of the assistant message. Required unless `tool_calls` or `function_call` is specified.
  role:
  type: string
  enum: ["assistant"]
@@ -5794,7 +5792,6 @@ components:
  - arguments
  - name
  required:
- - content
  - role
 
  ChatCompletionRequestToolMessage:
@@ -5806,7 +5803,6 @@ components:
  enum: ["tool"]
  description: The role of the messages author, in this case `tool`.
  content:
- nullable: true
  type: string
  description: The contents of the tool message.
  tool_call_id:
@@ -5827,7 +5823,6 @@ components:
  enum: ["function"]
  description: The role of the messages author, in this case `function`.
  content:
- nullable: true
  type: string
  description: The contents of the function message.
  name: