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#<<
IO::generic_writable
#binmode
StringIO
#bytes
StringIO
#chars
StringIO
#close
StringIO
#close_read
StringIO
#close_write
StringIO
#closed?
StringIO
#closed_read?
StringIO
#closed_write?
StringIO
#codepoints
StringIO
#each
StringIO
#each_byte
StringIO
#each_char
StringIO
#each_codepoint
StringIO
#each_line
StringIO
#eof
StringIO
#eof?
StringIO
#external_encoding
StringIO
#fcntl
StringIO
#fileno
StringIO
#flush
StringIO
#fsync
StringIO
#getbyte
StringIO
#getc
StringIO
#gets
StringIO
#initialize
StringIO
#initialize_copy
StringIO
#internal_encoding
StringIO
#isatty
StringIO
#length
StringIO
#lineno
StringIO
#lineno=
StringIO
#lines
StringIO
.new
StringIO
.open
StringIO
#pid
StringIO
#pos
StringIO
#pos=
StringIO
#print
IO::generic_writable
#printf
IO::generic_writable
#putc
StringIO
#puts
IO::generic_writable
#read
StringIO
#read_nonblock
IO::generic_readable
#readbyte
IO::generic_readable
#readchar
IO::generic_readable
#readline
IO::generic_readable
#readlines
StringIO
#readpartial
IO::generic_readable
#reopen
StringIO
#rewind
StringIO
#seek
StringIO
#set_encoding
StringIO
#set_encoding_by_bom
StringIO
#size
StringIO
#string
StringIO
#string=
StringIO
#sync
StringIO
#sync=
StringIO
#sysread
IO::generic_readable
#syswrite
IO::generic_writable
#tell
StringIO
#truncate
StringIO
#tty?
StringIO
#ungetbyte
StringIO
#ungetc
StringIO
#write
StringIO
#write_nonblock
IO::generic_writable