Compilation error 'process\v2\environment.hpp' value::operator=( const Source& source )

[MrROBUST]

Is this a typo that 'source.size' missing parens?

process/include/boost/process/v2/environment.hpp

Line 767 in 406cd3e

source.data(), source.size);

[build] In file included from ...\boost\include\boost/process/v2.hpp:9:
[build] ...\boost\include\boost/process/v2/environment.hpp(764,35): error: reference to non-static member function must be called; did you mean to call it with no arguments?
[build]             source.data(), source.size);
[build]                            ~~~~~~~^~~~