Calculate a path for a payment based on the assets the source/target owns.
findPaymentPaths(destination_account, destination_asset_type,
destination_asset_code, destination_asset_issuer, destination_amount,
source_account)
character - The destination account that any returned path should use.
character - The type of the destination asset credit_alphanum4
character - The code for the destination, if destination_asset_type is not <U+201C>native<U+201D>.
character - The issuer for the destination, if destination_asset_type is not <U+201C>native<U+201D>.
character - The amount, denominated in the destination asset, that any returned path should be able to satisfy.
character - The sender<U+2019>s account id. Any returned path must use a source that the sender can hold.
list