checkNotNull(charSequence);

    Closer closer = Closer.create();
    try {
      Writer out = closer.register(openStream());
      out.append(charSequence);
      out.flush(); // https://code.google.com/p/guava-libraries/issues/detail?id=1330
    } catch (Throwable e) {
      throw closer.rethrow(e);
    } finally {
      closer.close();
    }
  }

  /**

        Closer closer = Closer.create();
        closer.register(input);
        try {
            if (loaded) {
                throw new IllegalStateException("Build cache entry has already been read");
            }
            Files.asByteSink(file).writeFrom(input);
            loaded = true;
        } catch (Exception e) {
            throw closer.rethrow(e);
        } finally {

    checkNotNull(charSequence);

    Closer closer = Closer.create();
    try {
      Writer out = closer.register(openStream());
      out.append(charSequence);
      out.flush(); // https://code.google.com/p/guava-libraries/issues/detail?id=1330
    } catch (Throwable e) {
      throw closer.rethrow(e);
    } finally {
      closer.close();
    }
  }

  /**

package strconv

import (
	"errors"
	"internal/stringslite"
)

// lower(c) is a lower-case letter if and only if
// c is either that lower-case letter or the equivalent upper-case letter.
// Instead of writing c == 'x' || c == 'X' one can write lower(c) == 'x'.
// Note that lower of non-letters can produce other non-letters.
func lower(c byte) byte {
	return c | ('x' - 'X')
}

func Example_()              {} // invalid - suffix must start with a lower-case letter
func Example_suffix()        {}
func Example_suffix_xX_X_x() {}
func Example_世界()           {} // invalid - suffix must start with a lower-case letter
func Example_123()           {} // invalid - suffix must start with a lower-case letter
func Example_BadSuffix()     {} // invalid - suffix must start with a lower-case letter

func ExampleType1()               {}

			skipOrFatalFn()
			continue
		}

		c1, err := ListenPacket(tt.net, tt.addr1)
		if err != nil {
			t.Fatal(err)
		}
		defer closer(c1, tt.net, tt.addr1, tt.addr2)
		c1.LocalAddr()

		c2, err := ListenPacket(tt.net, tt.addr2)
		if err != nil {
			t.Fatal(err)
		}
		defer closer(c2, tt.net, tt.addr1, tt.addr2)
		c2.LocalAddr()
		rb2 := make([]byte, 128)

		if _, err := c1.WriteTo(wb, c2.LocalAddr()); err != nil {

// and a bool indicating whether the bound is the item's lower bound.
func (rap *relativeAllocProblem) decode(idx int) (float64, int, bool) {
	itemIdx, lower := rap.getItemIndex(idx)
	if lower {
		return rap.items[itemIdx].relativeLowerBound, itemIdx, lower
	}
	return rap.items[itemIdx].relativeUpperBound, itemIdx, lower
}

func (rap *relativeAllocProblem) getProportion(idx int) float64 {

func EqualFold(s, t string) bool {
	if len(s) != len(t) {
		return false
	}
	for i := 0; i < len(s); i++ {
		if lower(s[i]) != lower(t[i]) {
			return false
		}
	}
	return true
}

// lower returns the ASCII lowercase version of b.
func lower(b byte) byte {
	if 'A' <= b && b <= 'Z' {
		return b + ('a' - 'A')
	}
	return b
}

  }

  @CollectionSize.Require(SEVERAL)
  public void testLowerHole() {
    resetWithHole();
    assertEquals(null, navigableSet.lower(a));
    assertEquals(a, navigableSet.lower(b));
    assertEquals(a, navigableSet.lower(c));
  }

  @CollectionSize.Require(SEVERAL)
  public void testFloorHole() {
    resetWithHole();
    assertEquals(a, navigableSet.floor(a));

//
//	byte 1:
//	  7..6  unused
//	  5..3  length of 1st mapping of case type
//	  2..0  length of 2nd mapping of case type
//
//	  case     1st    2nd
//	  lower -> upper, title
//	  upper -> lower, title
//	  title -> lower, upper
//
// Lengths with the value 0x7 indicate no value and implies no change.
// A length of 0 indicates a mapping to zero-length string.
//
// Body bytes:
//