@JsonPropertyDescription annotation does not properly extract description from schema

[bhaesler]

Example:

This schema

{
  "$schema": "http://json-schema.org/draft-04/schema#",
  "type": "object",
  "properties": {
    "myField": {
      "type": "string",
      "description": "This is myField, not yours."
    }
  }
}

produces

/**
* This is myField, not yours.
* 
*/
@JsonProperty("myField")
@JsonPropertyDescription("")
private String myField;

but should have @JsonPropertyDescription("This is myField, not yours.")