Inheritance: InvocableSymbol
 public IndexerSymbolSignature(IndexerSymbol symbol)
 {
     Symbol = symbol;
 }
 private bool Equals(IndexerSymbol other)
 {
     return(base.Equals(other) && IndexType.Equals(other.IndexType) && ValueType.Equals(other.ValueType) && ReadOnly == other.ReadOnly);
 }