{ "$schema": "https://json-schema.org/draft/2020-12/schema", "title": "CommonPrefix", "type": "object", "properties": { "Prefix": {} }, "description": "Container for all (if there are any) keys between Prefix and the next occurrence of the string specified by a delimiter. CommonPrefixes lists keys that act like subdirectories in the directory specified by Prefix. For example, if the prefix is notes/ and the delimiter is a slash (/) as in notes/summer/july, the common prefix is notes/summer/. " }