fix multi-values/property warning

[guwirth]

• WARN: Property 'xxx' is not declared as multi-values/property set but was read using 'getStringArray' method. The SonarQube plugin declaring this property should be updated.
• close How to solve "The SonarQube plugin declaring this property should be updated" #1775

---

This change is 

[Bertk]

LGTM

[ivangalkin]

Reviewable status: 0 of 1 files reviewed, 2 unresolved discussions (waiting on @guwirth, @ivangalkin, and @jmecosta)

---

sonar-c-plugin/src/main/java/org/sonar/plugins/c/CPlugin.java, line 119 at r1 (raw file):

        .multiValues(true)
        .name("Include directories")
        .description("Comma-separated list of directories to search the included files in. May be defined either"

the description has to be corrected: the web UI will provide one input box per value; it is not "comma-separated list" any more

besides that: is the change backwards compatible? will customizations done by users still correctly displayed in the UI?

---

sonar-c-plugin/src/main/java/org/sonar/plugins/c/CPlugin.java, line 126 at r1 (raw file):

        .build(),
      PropertyDefinition.builder(FORCE_INCLUDE_FILES_KEY)
        .multiValues(true)

same here and below

[guwirth]

@ivangalkin

Double checked this with Java. They also call it "comma-separated list". Think this is because it is in the config file still a comma-separated list and only in the UI different fields: