Mark attributes that may be null or missing in response.

Resolves #103

Author: stevencrader

api_src/components/properties/chaptersUrl.yaml

@@ -2,5 +2,6 @@
 description: >
   Link to the JSON file containing the episode chapters
 type: string
+nullable: true
 format: URL
 example: "https://studio.hypercatcher.com/chapters/podcast/http:feed.nashownotes.comrss.xml/episode/http:1322.noagendanotes.com"

api_src/components/properties/customKey.yaml

@@ -1,10 +1,11 @@
   # language=Markdown
 description: >
-  The name of a custom record key to send along with the payment.
+  The name of a custom record key to send along with the payment. May not be reported.
 
 
   See the [podcast namespace spec](https://github.com/Podcastindex-org/podcast-namespace/blob/main/docs/1.0.md#value)
   and [value specification](https://github.com/Podcastindex-org/podcast-namespace/blob/main/value/value.md)
   for more information.
 type: string
+nullable: true
 example: "112111100"

api_src/components/properties/customValue.yaml

@@ -1,10 +1,11 @@
   # language=Markdown
 description: >
-  A custom value to pass along with the payment. This is considered the value that belongs to the customKey.
+  A custom value to pass along with the payment. This is considered the value that belongs to the customKey. May not be reported.
 
 
   See the [podcast namespace spec](https://github.com/Podcastindex-org/podcast-namespace/blob/main/docs/1.0.md#value)
   and [value specification](https://github.com/Podcastindex-org/podcast-namespace/blob/main/value/value.md)
   for more information.
 type: string
+nullable: true
 example: "wal_ZmqFg13NB31oek"

api_src/components/properties/duplicateOf.yaml

@@ -1,5 +1,6 @@
   # language=Markdown
 description: >
-  The internal PodcastIndex.org Feed ID this feed duplicates
+  The internal PodcastIndex.org Feed ID this feed duplicates. May be null except in `podcasts/dead`.
 type: integer
+nullable: true
 example: 75075

api_src/components/properties/duration.yaml

@@ -1,6 +1,7 @@
   # language=Markdown
 description: >
-  The estimated length of the item specified by the `enclosureUrl` in seconds
+  The estimated length of the item specified by the `enclosureUrl` in seconds. Will be null for `liveItem`.
 type: integer
+nullable: true
 format: seconds
 example: 54

api_src/components/properties/episodeType.yaml

@@ -1,7 +1,8 @@
   # language=Markdown
 description: >
-  The type of episode
+  The type of episode. May be null for `liveItem`.
 type: string
+nullable: true
 enum:
   - full
   - trailer

api_src/components/properties/episode_number.yaml

@@ -2,4 +2,5 @@
 description: >
   Episode number
 type: integer
+nullable: true
 example: 19

api_src/components/properties/fee_destination.yaml

@@ -1,5 +1,6 @@
   # language=Markdown
 description: >
-  Indicates if destination is included due to a fee being charged
+  Indicates if destination is included due to a fee being charged. May not be reported.
 type: boolean
+nullable: true
 example: true

api_src/components/properties/feeds_categories.yaml

@@ -2,5 +2,6 @@
 description: >
   List of categories
 type: array
+nullable: true
 items:
   $ref: '../schemas/feed_categories.yaml'

api_src/components/properties/funding.yaml

@@ -1,10 +1,11 @@
   # language=Markdown
 description: >
-  Information for donation/funding the podcast.
+  Information for donation/funding the podcast. May not be reported.
 
 
   See the [podcast namespace spec](https://github.com/Podcastindex-org/podcast-namespace/blob/main/docs/1.0.md#funding) for more information.
 type: object
+nullable: true
 properties:
   url:
     $ref: '../properties/url_funding.yaml'