markSearchedSymbols(sourceFile, symbols) {
            const sourceId = getNodeId(sourceFile);
            const seenSymbols = this.sourceFileToSeenSymbols[sourceId] || (this.sourceFileToSeenSymbols[sourceId] = /* @__PURE__ */ new Set());
            let anyNewSymbols = false;
            for (const sym of symbols) {
              anyNewSymbols = tryAddToSet(seenSymbols, getSymbolId(sym)) || anyNewSymbols;
            }
            return anyNewSymbols;
          }
Returns `true` the first time we search for a symbol in a file and `false` afterwards.