Abstract Base Oracle
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and are abstract contracts that will standardize and extend some useful features to all price providers while inheriting our basic interface .
Among the features that implement are:
Implementing : Declares support of contract interfaces (such as ITokenPriceOracle, Multicall), which can then be queried by others.
Adding support: Provides a function to batch together multiple calls in a single external call, allowing multiple quotes for multiple pairs.
inherits all features while also standardizing the implementation of addOrModifySupportForPair and addSupportForPairIfNeeded functions by defining and re-using the abstract internal function _addOrModifySupportForPair . This internal function should be defined by whomever inherits .