assertSame(s1, s2);

    Long n1 = 42L;
    Long n2 = MoreObjects.firstNonNull(null, n1);
    assertSame(n1, n2);

    Boolean b1 = true;
    Boolean b2 = MoreObjects.firstNonNull(b1, null);
    assertSame(b1, b2);
  }

  public void testFirstNonNull_throwsNullPointerException() {
    try {
      MoreObjects.firstNonNull(null, null);
      fail();

        given:
        file("a").with {
            createFile("a")
        }
        file("b").with {
            createFile("b")
            createDir("b1").createFile("b1")
        }

        def resolver = TestFiles.resolver(testDirectory)
        def fileCollectionFactory = TestFiles.fileCollectionFactory(testDirectory)

 * that follows.
 *
 * b1
 * --
 *
 * This is either a mapping decision or the length of the mapped output, according to this table:
 *
 * ```
 *  0..63 : Length of the UTF-16 sequence that this range maps to. The offset is b2b3.
 * 64..79 : Offset by a fixed negative offset. The bottom 4 bits of b1 are the top 4 bits of the offset.

        final byte b0 = DECODE_TABLE[inData.charAt(inIndex)];
        final byte b1 = DECODE_TABLE[inData.charAt(inIndex + 1)];
        final byte b2 = DECODE_TABLE[inData.charAt(inIndex + 2)];
        final byte b3 = DECODE_TABLE[inData.charAt(inIndex + 3)];
        outData[outIndex] = (byte) (b0 << 2 & 0xfc | b1 >> 4 & 0x3);
        outData[outIndex + 1] = (byte) (b1 << 4 & 0xf0 | b2 >> 2 & 0xf);

func (W1) n() {}

// alias receiver types (invalid due to builtin underlying type)
type (
	B0 = B1
	B1 = B2
	B2 = int
)

func (B0 /* ERRORx "cannot define new methods on non-local type (int|B)" */ ) m() {}
func (B1 /* ERRORx "cannot define new methods on non-local type (int|B)" */ ) n() {}

// cycles
type (
	C2 /* ERROR "invalid recursive type" */ = C2

000000d0  ec b1 19 dd 68 b5 bd c4  bb ba 63 9a e4 c9 24 af  |....h.....c...$.|
000000e0  88 13 65 11 bf ea d9 07  e9 46 fd 5b 60 ce 57 46  |..e......F.[`.WF|
000000f0  8b a9 bd c6 58 1a 3b bd  5e fb 0f 46 ec fc 8b 2c  |....X.;.^..F...,|
00000100  ea a7 19 06 6a e5 6f 10  7a 27 04 6b aa a4 2c f4  |....j.o.z'.k..,.|
00000110  ef 3b e8 8a 51 88 fd e0  ae 33 b1 4c b3 04 5e 91  |.;..Q....3.L..^.|

-- a2/sub/sub.go --
package sub
-- a3/go.mod --
module a

go 1.19

require b v0.2.0
-- a3/a.go --
package a

import _ "b"
-- a3/sub/sub.go --
package sub
-- b1/go.mod --
module b

go 1.19
-- b1/b.go --
package b
-- b2/go.mod --
module b

go 1.19

require a v0.2.0
-- b2/b.go --
package b

import "a/sub"
-- c1/go.mod --
module c

go 1.19

00000400  6b 6d ce f9 5f 43 2f 8e  24 0b 46 0b a5 5a 22 d5  |km.._C/.$.F..Z".|
00000410  ff 33 d7 e6 04 2e 37 5b  00 45 9d 8b 62 49 81 b1  |.3....7[.E..bI..|
00000420  97 ca d5 84 dd f9 7e 1a  7a a3 45 46 b9 db a7 d4  |......~.z.EF....|
00000430  07 3d 54 39 b1 de 54 16  bc d7 ba e7 b8 92 02 eb  |.=T9..T.........|
00000440  0c 3c b1 48 40 53 68 f5  fc 0f 6a 64 67 fb 79 cd  |.<******@****.***.y.|
00000450  75 ed 65 7c 88 01 04 43  ed 00 44 68 c3 74 c1 bc  |u.e|...C..Dh.t..|

00000010  6c 1f de 6b 2d 67 9e 1b  13 13 ad 67 d8 0f b2 b1  |l..k-g.....g....|
00000020  95 17 e7 0b e1 ba 6f 93  20 43 aa c7 a4 02 8e 38  |......o. C.....8|
00000030  01 6b 53 55 33 6e 82 ea  70 d7 e2 a6 bd be 57 2d  |.kSU3n..p.....W-|
00000040  85 1c 4a 28 30 42 34 e6  f9 38 9c 59 ed 1c fc ff  |..J(0B4..8.Y....|
00000050  19 0f 1d 71 f1 4b 2a 7a  b1 c6 d9 11 a5 5e ca 1c  |...q.K*z.....^..|

00000310  9b e7 06 73 88 9f f9 7d  95 ce 74 a6 05 e9 38 a5  |...s...}..t...8.|
00000320  26 4b b2 26 31 5c e9 f9  a8 f8 6e 6b 05 e4 39 b5  |&K.&1\....nk..9.|
00000330  fe b1 b1 cd 40 23 e9 68  f3 9c ed 91 71 d3 0b c5  |....@#.h....q...|
00000340  91 c5 b2 91 69 a9 4b 2c  a7 0c 24 d6 a9 e7 74 89  |....i.K,..$...t.|
00000350  9e ce 8b 00 72 9a c9 86  8b ca 8d 39 01 a0 71 3e  |....r......9..q>|