func init()

in betamessage.go [1050:1089]

• 40 lines of code
• 1 McCabe index (conditional complexity)

func init() {
	apijson.RegisterUnion[BetaContentBlockParamUnion](
		"type",
		apijson.UnionVariant{
			TypeFilter:         gjson.JSON,
			Type:               reflect.TypeOf(BetaTextBlockParam{}),
			DiscriminatorValue: "text",
		},
		apijson.UnionVariant{
			TypeFilter:         gjson.JSON,
			Type:               reflect.TypeOf(BetaImageBlockParam{}),
			DiscriminatorValue: "image",
		},
		apijson.UnionVariant{
			TypeFilter:         gjson.JSON,
			Type:               reflect.TypeOf(BetaToolUseBlockParam{}),
			DiscriminatorValue: "tool_use",
		},
		apijson.UnionVariant{
			TypeFilter:         gjson.JSON,
			Type:               reflect.TypeOf(BetaToolResultBlockParam{}),
			DiscriminatorValue: "tool_result",
		},
		apijson.UnionVariant{
			TypeFilter:         gjson.JSON,
			Type:               reflect.TypeOf(BetaBase64PDFBlockParam{}),
			DiscriminatorValue: "document",
		},
		apijson.UnionVariant{
			TypeFilter:         gjson.JSON,
			Type:               reflect.TypeOf(BetaThinkingBlockParam{}),
			DiscriminatorValue: "thinking",
		},
		apijson.UnionVariant{
			TypeFilter:         gjson.JSON,
			Type:               reflect.TypeOf(BetaRedactedThinkingBlockParam{}),
			DiscriminatorValue: "redacted_thinking",
		},
	)
}