instrument Solute

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From #92:

• Do we need an API for solutes? What do you want to be able to inspect about a solute?

2/6/20 design meeting decision: phetioID, nameProperty, pH

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I instrumented SoluteIO as requested, and tested in Studio and State Wrapper.

Inspecting the Solute instances shows none of the desired information. E.g.:

Inspecting soluteProperty does show the desired info:

There was a long-ish discussion about this on the Slack phet-io channel. This is apparently a PhET-iO deficiency, and @zepumph created https://github.com/phetsims/phet-io/issues/1616.

So this is blocked until this is addressed generally in Studio.

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@samreid pointed out that Solute was phetioState: false. Changing that to true shows the state information, see below.

@arouinfar please test drive in master, inspect solutes under phScale.global.model.solutes. If this looks sufficient, feel free to close.

[arouinfar]

Looks good in master @pixelzoom, closing.

[zepumph]

Note that we changes this implementation over in https://github.com/phetsims/phet-io/issues/1616 with c665cba. Because we no longer to require it to be phetioState to get studio info about the solutes. Anyone please feel free to reopen if needed, but things are still the same. . .

This is what the same studio look now holds:

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I'll take your word for it.