Changes

Summary

1. FileProxy: additional checks on existing files (#2293) (commit: 80eea46) (details)

Commit 80eea467fa57273fc25dd9eb10135f3af2e304e8 by noreply FileProxy: additional checks on existing files (#2293) (commit: 80eea46)
	src/main/java/net/dv8tion/jda/api/utils/AttachmentProxy.java (diff)
	src/main/java/net/dv8tion/jda/api/utils/ImageProxy.java (diff)
	src/main/java/net/dv8tion/jda/api/utils/FileProxy.java (diff)