entity-store/src/main/kotlin/jetbrains/exodus/entitystore/iterate/binop/MinusIterable.kt [80:109]:
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        override fun hasNextImpl(): Boolean {
            var currentMinuend = currentMinuend
            var currentSubtrahend = currentSubtrahend
            while (currentMinuend !== PersistentEntityId.EMPTY_ID) {
                if (currentMinuend == null) {
                    currentMinuend = checkNextId(minuend)
                    this.currentMinuend = currentMinuend
                }
                if (currentSubtrahend == null) {
                    currentSubtrahend = checkNextId(subtrahend)
                    this.currentSubtrahend = currentSubtrahend
                }
                // no more ids in minuend
                if (currentMinuend.also { nextId = it } === PersistentEntityId.EMPTY_ID) {
                    break
                }
                // no more ids subtrahend
                if (currentSubtrahend === PersistentEntityId.EMPTY_ID) {
                    currentMinuend = null
                    break
                }
                if (currentMinuend !== currentSubtrahend && (currentMinuend == null || currentSubtrahend == null)) {
                    break
                }
                if (currentMinuend === currentSubtrahend) {
                    currentSubtrahend = null
                    currentMinuend = null
                    continue
                }
                val cmp = currentMinuend?.compareTo(currentSubtrahend) ?: throw throw IllegalStateException("Can't be")
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entity-store/src/main/kotlin/jetbrains/exodus/entitystore/iterate/binop/MinusIterable.kt [135:164]:
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        override fun hasNextImpl(): Boolean {
            var currentMinuend = currentMinuend
            var currentSubtrahend = currentSubtrahend
            while (currentMinuend !== PersistentEntityId.EMPTY_ID) {
                if (currentMinuend == null) {
                    currentMinuend = checkNextId(minuend)
                    this.currentMinuend = currentMinuend
                }
                if (currentSubtrahend == null) {
                    currentSubtrahend = checkNextId(subtrahend)
                    this.currentSubtrahend = currentSubtrahend
                }
                // no more ids in minuend
                if (currentMinuend.also { nextId = it } === PersistentEntityId.EMPTY_ID) {
                    break
                }
                // no more ids subtrahend
                if (currentSubtrahend === PersistentEntityId.EMPTY_ID) {
                    currentMinuend = null
                    break
                }
                if (currentMinuend !== currentSubtrahend && (currentMinuend == null || currentSubtrahend == null)) {
                    break
                }
                if (currentMinuend === currentSubtrahend) {
                    currentSubtrahend = null
                    currentMinuend = null
                    continue
                }
                val cmp = currentMinuend?.compareTo(currentSubtrahend) ?: throw throw IllegalStateException("Can't be")
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