class Aws::Sigv4::Signer

def extract_credentials_provider(options) 

def extract_credentials_provider(options)
  if options[:credentials_provider]
    options[:credentials_provider]
  elsif options.key?(:credentials) || options.key?(:access_key_id)
    StaticCredentialsProvider.new(options)
  else
    raise Errors::MissingCredentialsError
  end
end