WeChat.CustomMessage.send_image
You're seeing just the function
send_image
, go back to WeChat.CustomMessage module for more information.
Link to this function
send_image(client, openid, media_id)
Specs
send_image(WeChat.client(), WeChat.openid(), WeChat.Material.media_id()) :: WeChat.response()
客服消息接口 - 发送图片消息 - 官方文档