How to get securitySchemes for oauth_2_0

[vipulvaghela86]

Library version used
0.5.0

Language library used with
Java

My RAML file content like below
securitySchemes:
oauth_2_0:
description: |
Dropbox supports OAuth 2.0 for authenticating all API requests.
type: OAuth 2.0
describedBy:
headers:
Authorization:
description: |
Used to send a valid OAuth 2 access token. Do not use
with the "access_token" query string parameter.
type: string

I want to get details of headers described in securitiesSchemes, how can I ?
I'm trying to read like this but seems no more information on this securities object.

WebApi api = (WebApi) webModel.encodes();
Map<String, Object> root = new LinkedHashMap<>();

    **List<SecurityRequirement> securities =  api.security();**

[uip-robot-zz]

Git2Gus App is installed but the .git2gus/config.json doesn't exist.