Optional createdOptional extra?: Record<string, unknown>Optional id?: stringOptional interrupted?: booleanOptional metrics?: MetricsReportOptional transcriptOptional hashReadonly idReadonly roleOptional transcriptReadonly typeStatic createOptional createdOptional extra?: Record<string, unknown>Optional id?: stringOptional interrupted?: booleanOptional metrics?: MetricsReportOptional transcript
Returns a single string with all text parts of the message joined by new lines. If no string content is present, returns
null.