Each breadcrumb message can be up to 140 characters in length, with additional metadata, and the most recent 128 will be saved.
If a single breadcrumb exceeds 1KB in size, the metadata will be discarded.
※The WebSDK has a maximum of 16. There is no maximum data size, however, including a large amount of data in a crash report increases its overall size, and hence the amount of data which must be transmitted.
public static void leaveBreadcrumbs(java.lang.String breadcrumb)