The whole hunk
from line 149, old and new numbered
/
lines
from line 149
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150150 Artifact version ID e.g. 'claude_artifact_version_abc123'
151151
152 - `content: array of object or object or object`
152 - `content: array of Text or ToolUse or ToolResult`
153153
154154 Content blocks within the message
155155