Add a Provider to the list of Excluded Providers. Excluded Providers are not expected to respond to subsequent retries of the operation. Normally, this is done after a response is received from the Provider to prevent that Provider from responding again on a retry (to reduce traffic). However, it may be used to prevent the Provider from responding even to the initial request if the provider is already added to the exclusion list prior to making the request. There is no guarantee that the Provider will not respond; the application must be prepared to receive responses from nodes previously added to the exclusion list. It is permissible to add the same provider multiple times to the exclusion list.
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