public int[] intArray(int minCapacity) {
        final int[] intArray = this.intArray;
        if (intArray.length >= minCapacity) {
            return intArray;
        }
        return allocateIntArray(minCapacity);
    }
Returns a thread-local integer array whose length is equal to or greater than the specified
{@code minCapacity}.
core/src/main/java/com/linecorp/armeria/internal/common/util/TemporaryThreadLocals.java